* Licensed to the Apache Software Foundation (ASF) under one

* or more contributor license agreements.  See the NOTICE file

* distributed with this work for additional information

* regarding copyright ownership.  The ASF licenses this file

* to you under the Apache License, Version 2.0 (the

* "License"); you may not use this file except in compliance

* with the License.  You may obtain a copy of the License at

*

*     http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing,

* software distributed under the License is distributed on an

* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

* KIND, either express or implied.  See the License for the

* specific language governing permissions and limitations

* under the License.

*/

* @deprecated Use/modify {@link org.apache.hive.hcatalog.pig.TestHCatLoader} instead

*/

  private static final String TEST_DATA_DIR = System.getProperty("user.dir") +

    "/build/test/data/" + TestHCatLoader.class.getCanonicalName();

  private static final String TEST_WAREHOUSE_DIR = TEST_DATA_DIR + "/warehouse";

  private static final String BASIC_FILE_NAME = TEST_DATA_DIR + "/basic.input.data";

  private static final String COMPLEX_FILE_NAME = TEST_DATA_DIR + "/complex.input.data";

  private static final String BASIC_TABLE = "junit_unparted_basic";

  private static final String COMPLEX_TABLE = "junit_unparted_complex";

  private static final String PARTITIONED_TABLE = "junit_parted_basic";

  private static final String SPECIFIC_SIZE_TABLE = "junit_specific_size";

  private static Driver driver;

  private static int guardTestCount = 6; // ugh, instantiate using introspection in guardedSetupBeforeClass

  private static boolean setupHasRun = false;

  private static Map<Integer, Pair<Integer, String>> basicInputData;

  protected String storageFormat() {

    return "RCFILE tblproperties('hcat.isd'='org.apache.hcatalog.rcfile.RCFileInputDriver'," +

      "'hcat.osd'='org.apache.hcatalog.rcfile.RCFileOutputDriver')";

  }

  private void dropTable(String tablename) throws IOException, CommandNeedRetryException {

    driver.run("drop table " + tablename);

  }

  private void createTable(String tablename, String schema, String partitionedBy) throws IOException, CommandNeedRetryException {

    String createTable;

    createTable = "create table " + tablename + "(" + schema + ") ";

    if ((partitionedBy != null) && (!partitionedBy.trim().isEmpty())) {

      createTable = createTable + "partitioned by (" + partitionedBy + ") ";

    }

    createTable = createTable + "stored as " +storageFormat();

    int retCode = driver.run(createTable).getResponseCode();

    if (retCode != 0) {

      throw new IOException("Failed to create table. [" + createTable + "], return code from hive driver : [" + retCode + "]");

    }

  }

  private void createTable(String tablename, String schema) throws IOException, CommandNeedRetryException {

    createTable(tablename, schema, null);

  }

  protected void guardedSetUpBeforeClass() throws Exception {

    if (!setupHasRun) {

      setupHasRun = true;

    } else {

      return;

    }

    File f = new File(TEST_WAREHOUSE_DIR);

    if (f.exists()) {

      FileUtil.fullyDelete(f);

    }

    new File(TEST_WAREHOUSE_DIR).mkdirs();

    HiveConf hiveConf = new HiveConf(this.getClass());

    hiveConf.set(HiveConf.ConfVars.PREEXECHOOKS.varname, "");

    hiveConf.set(HiveConf.ConfVars.POSTEXECHOOKS.varname, "");

    hiveConf.set(HiveConf.ConfVars.HIVE_SUPPORT_CONCURRENCY.varname, "false");

    hiveConf.set(HiveConf.ConfVars.METASTOREWAREHOUSE.varname, TEST_WAREHOUSE_DIR);

    driver = new Driver(hiveConf);

    SessionState.start(new CliSessionState(hiveConf));

    cleanup();

    createTable(BASIC_TABLE, "a int, b string");

    createTable(COMPLEX_TABLE,

      "name string, studentid int, "

        + "contact struct<phno:string,email:string>, "

        + "currently_registered_courses array<string>, "

        + "current_grades map<string,string>, "

        + "phnos array<struct<phno:string,type:string>>");

    createTable(PARTITIONED_TABLE, "a int, b string", "bkt string");

    createTable(SPECIFIC_SIZE_TABLE, "a int, b string");

    int LOOP_SIZE = 3;

    String[] input = new String[LOOP_SIZE * LOOP_SIZE];

    basicInputData = new HashMap<Integer, Pair<Integer, String>>();

    int k = 0;

    for (int i = 1; i <= LOOP_SIZE; i++) {

      String si = i + "";

      for (int j = 1; j <= LOOP_SIZE; j++) {

        String sj = "S" + j + "S";

        input[k] = si + "\t" + sj;

        basicInputData.put(k, new Pair<Integer, String>(i, sj));

        k++;

      }

    }

    HcatTestUtils.createTestDataFile(BASIC_FILE_NAME, input);

    HcatTestUtils.createTestDataFile(COMPLEX_FILE_NAME,

      new String[]{

        //"Henry Jekyll\t42\t(415-253-6367,hjekyll@contemporary.edu.uk)\t{(PHARMACOLOGY),(PSYCHIATRY)},[PHARMACOLOGY#A-,PSYCHIATRY#B+],{(415-253-6367,cell),(408-253-6367,landline)}",

        //"Edward Hyde\t1337\t(415-253-6367,anonymous@b44chan.org)\t{(CREATIVE_WRITING),(COPYRIGHT_LAW)},[CREATIVE_WRITING#A+,COPYRIGHT_LAW#D],{(415-253-6367,cell),(408-253-6367,landline)}",

      }

    );

    PigServer server = new PigServer(ExecType.LOCAL);

    server.setBatchOn();

    server.registerQuery("A = load '" + BASIC_FILE_NAME + "' as (a:int, b:chararray);");

    server.registerQuery("store A into '" + BASIC_TABLE + "' using org.apache.hcatalog.pig.HCatStorer();");

    server.registerQuery("store A into '" + SPECIFIC_SIZE_TABLE + "' using org.apache.hcatalog.pig.HCatStorer();");

    server.registerQuery("B = foreach A generate a,b;");

    server.registerQuery("B2 = filter B by a < 2;");

    server.registerQuery("store B2 into '" + PARTITIONED_TABLE + "' using org.apache.hcatalog.pig.HCatStorer('bkt=0');");

    server.registerQuery("C = foreach A generate a,b;");

    server.registerQuery("C2 = filter C by a >= 2;");

    server.registerQuery("store C2 into '" + PARTITIONED_TABLE + "' using org.apache.hcatalog.pig.HCatStorer('bkt=1');");

    server.registerQuery("D = load '" + COMPLEX_FILE_NAME + "' as (name:chararray, studentid:int, contact:tuple(phno:chararray,email:chararray), currently_registered_courses:bag{innertup:tuple(course:chararray)}, current_grades:map[ ] , phnos :bag{innertup:tuple(phno:chararray,type:chararray)});");

    server.registerQuery("store D into '" + COMPLEX_TABLE + "' using org.apache.hcatalog.pig.HCatStorer();");

    server.executeBatch();

  }

  private void cleanup() throws IOException, CommandNeedRetryException {

    dropTable(BASIC_TABLE);

    dropTable(COMPLEX_TABLE);

    dropTable(PARTITIONED_TABLE);

    dropTable(SPECIFIC_SIZE_TABLE);

  }

  protected void guardedTearDownAfterClass() throws Exception {

    guardTestCount--;

    if (guardTestCount > 0) {

      return;

    }

    cleanup();

  }

  @Override

  protected void setUp() throws Exception {

    guardedSetUpBeforeClass();

  }

  @Override

  protected void tearDown() throws Exception {

    guardedTearDownAfterClass();

  }

  public void testSchemaLoadBasic() throws IOException {

    PigServer server = new PigServer(ExecType.LOCAL);

    // test that schema was loaded correctly

    server.registerQuery("X = load '" + BASIC_TABLE + "' using org.apache.hcatalog.pig.HCatLoader();");

    Schema dumpedXSchema = server.dumpSchema("X");

    List<FieldSchema> Xfields = dumpedXSchema.getFields();

    assertEquals(2, Xfields.size());

    assertTrue(Xfields.get(0).alias.equalsIgnoreCase("a"));

    assertTrue(Xfields.get(0).type == DataType.INTEGER);

    assertTrue(Xfields.get(1).alias.equalsIgnoreCase("b"));

    assertTrue(Xfields.get(1).type == DataType.CHARARRAY);

  }

  public void testReadDataBasic() throws IOException {

    PigServer server = new PigServer(ExecType.LOCAL);

    server.registerQuery("X = load '" + BASIC_TABLE + "' using org.apache.hcatalog.pig.HCatLoader();");

    Iterator<Tuple> XIter = server.openIterator("X");

    int numTuplesRead = 0;

    while (XIter.hasNext()) {

      Tuple t = XIter.next();

      assertEquals(2, t.size());

      assertTrue(t.get(0).getClass() == Integer.class);

      assertTrue(t.get(1).getClass() == String.class);

      assertEquals(t.get(0), basicInputData.get(numTuplesRead).first);

      assertEquals(t.get(1), basicInputData.get(numTuplesRead).second);

      numTuplesRead++;

    }

    assertEquals(basicInputData.size(), numTuplesRead);

  }

  public void testSchemaLoadComplex() throws IOException {

    PigServer server = new PigServer(ExecType.LOCAL);

    // test that schema was loaded correctly

    server.registerQuery("K = load '" + COMPLEX_TABLE + "' using org.apache.hcatalog.pig.HCatLoader();");

    Schema dumpedKSchema = server.dumpSchema("K");

    List<FieldSchema> Kfields = dumpedKSchema.getFields();

    assertEquals(6, Kfields.size());

    assertEquals(DataType.CHARARRAY, Kfields.get(0).type);

    assertEquals("name", Kfields.get(0).alias.toLowerCase());

    assertEquals(DataType.INTEGER, Kfields.get(1).type);

    assertEquals("studentid", Kfields.get(1).alias.toLowerCase());

    assertEquals(DataType.TUPLE, Kfields.get(2).type);

    assertEquals("contact", Kfields.get(2).alias.toLowerCase());

    {

      assertNotNull(Kfields.get(2).schema);

      assertTrue(Kfields.get(2).schema.getFields().size() == 2);

      assertTrue(Kfields.get(2).schema.getFields().get(0).type == DataType.CHARARRAY);

      assertTrue(Kfields.get(2).schema.getFields().get(0).alias.equalsIgnoreCase("phno"));

      assertTrue(Kfields.get(2).schema.getFields().get(1).type == DataType.CHARARRAY);

      assertTrue(Kfields.get(2).schema.getFields().get(1).alias.equalsIgnoreCase("email"));

    }

    assertEquals(DataType.BAG, Kfields.get(3).type);

    assertEquals("currently_registered_courses", Kfields.get(3).alias.toLowerCase());

    {

      assertNotNull(Kfields.get(3).schema);

      assertEquals(1, Kfields.get(3).schema.getFields().size());

      assertEquals(DataType.TUPLE, Kfields.get(3).schema.getFields().get(0).type);

      assertNotNull(Kfields.get(3).schema.getFields().get(0).schema);

      assertEquals(1, Kfields.get(3).schema.getFields().get(0).schema.getFields().size());

      assertEquals(DataType.CHARARRAY, Kfields.get(3).schema.getFields().get(0).schema.getFields().get(0).type);

      // assertEquals("course",Kfields.get(3).schema.getFields().get(0).schema.getFields().get(0).alias.toLowerCase());

      // commented out, because the name becomes "innerfield" by default - we call it "course" in pig,

      // but in the metadata, it'd be anonymous, so this would be autogenerated, which is fine

    }

    assertEquals(DataType.MAP, Kfields.get(4).type);

    assertEquals("current_grades", Kfields.get(4).alias.toLowerCase());

    assertEquals(DataType.BAG, Kfields.get(5).type);

    assertEquals("phnos", Kfields.get(5).alias.toLowerCase());

    {

      assertNotNull(Kfields.get(5).schema);

      assertEquals(1, Kfields.get(5).schema.getFields().size());

      assertEquals(DataType.TUPLE, Kfields.get(5).schema.getFields().get(0).type);

      assertNotNull(Kfields.get(5).schema.getFields().get(0).schema);

      assertTrue(Kfields.get(5).schema.getFields().get(0).schema.getFields().size() == 2);

      assertEquals(DataType.CHARARRAY, Kfields.get(5).schema.getFields().get(0).schema.getFields().get(0).type);

      assertEquals("phno", Kfields.get(5).schema.getFields().get(0).schema.getFields().get(0).alias.toLowerCase());

      assertEquals(DataType.CHARARRAY, Kfields.get(5).schema.getFields().get(0).schema.getFields().get(1).type);

      assertEquals("type", Kfields.get(5).schema.getFields().get(0).schema.getFields().get(1).alias.toLowerCase());

    }

  }

  public void testReadPartitionedBasic() throws IOException, CommandNeedRetryException {

    PigServer server = new PigServer(ExecType.LOCAL);

    driver.run("select * from " + PARTITIONED_TABLE);

    ArrayList<String> valuesReadFromHiveDriver = new ArrayList<String>();

    driver.getResults(valuesReadFromHiveDriver);

    assertEquals(basicInputData.size(), valuesReadFromHiveDriver.size());

    server.registerQuery("W = load '" + PARTITIONED_TABLE + "' using org.apache.hcatalog.pig.HCatLoader();");

    Schema dumpedWSchema = server.dumpSchema("W");

    List<FieldSchema> Wfields = dumpedWSchema.getFields();

    assertEquals(3, Wfields.size());

    assertTrue(Wfields.get(0).alias.equalsIgnoreCase("a"));

    assertTrue(Wfields.get(0).type == DataType.INTEGER);

    assertTrue(Wfields.get(1).alias.equalsIgnoreCase("b"));

    assertTrue(Wfields.get(1).type == DataType.CHARARRAY);

    assertTrue(Wfields.get(2).alias.equalsIgnoreCase("bkt"));

    assertTrue(Wfields.get(2).type == DataType.CHARARRAY);

    Iterator<Tuple> WIter = server.openIterator("W");

    Collection<Pair<Integer, String>> valuesRead = new ArrayList<Pair<Integer, String>>();

    while (WIter.hasNext()) {

      Tuple t = WIter.next();

      assertTrue(t.size() == 3);

      assertTrue(t.get(0).getClass() == Integer.class);

      assertTrue(t.get(1).getClass() == String.class);

      assertTrue(t.get(2).getClass() == String.class);

      valuesRead.add(new Pair<Integer, String>((Integer) t.get(0), (String) t.get(1)));

      if ((Integer) t.get(0) < 2) {

        assertEquals("0", t.get(2));

      } else {

        assertEquals("1", t.get(2));

      }

    }

    assertEquals(valuesReadFromHiveDriver.size(), valuesRead.size());

    server.registerQuery("P1 = load '" + PARTITIONED_TABLE + "' using org.apache.hcatalog.pig.HCatLoader();");

    server.registerQuery("P1filter = filter P1 by bkt == '0';");

    Iterator<Tuple> P1Iter = server.openIterator("P1filter");

    int count1 = 0;

    while (P1Iter.hasNext()) {

      Tuple t = P1Iter.next();

      assertEquals("0", t.get(2));

      assertEquals(1, t.get(0));

      count1++;

    }

    assertEquals(3, count1);

    server.registerQuery("P2 = load '" + PARTITIONED_TABLE + "' using org.apache.hcatalog.pig.HCatLoader();");

    server.registerQuery("P2filter = filter P2 by bkt == '1';");

    Iterator<Tuple> P2Iter = server.openIterator("P2filter");

    int count2 = 0;

    while (P2Iter.hasNext()) {

      Tuple t = P2Iter.next();

      assertEquals("1", t.get(2));

      assertTrue(((Integer) t.get(0)) > 1);

      count2++;

    }

    assertEquals(6, count2);

  }

  public void testProjectionsBasic() throws IOException {

    PigServer server = new PigServer(ExecType.LOCAL);

    // projections are handled by using generate, not "as" on the Load

    server.registerQuery("Y1 = load '" + BASIC_TABLE + "' using org.apache.hcatalog.pig.HCatLoader();");

    server.registerQuery("Y2 = foreach Y1 generate a;");

    server.registerQuery("Y3 = foreach Y1 generate b,a;");

    Schema dumpedY2Schema = server.dumpSchema("Y2");

    Schema dumpedY3Schema = server.dumpSchema("Y3");

    List<FieldSchema> Y2fields = dumpedY2Schema.getFields();

    List<FieldSchema> Y3fields = dumpedY3Schema.getFields();

    assertEquals(1, Y2fields.size());

    assertEquals("a", Y2fields.get(0).alias.toLowerCase());

    assertEquals(DataType.INTEGER, Y2fields.get(0).type);

    assertEquals(2, Y3fields.size());

    assertEquals("b", Y3fields.get(0).alias.toLowerCase());

    assertEquals(DataType.CHARARRAY, Y3fields.get(0).type);

    assertEquals("a", Y3fields.get(1).alias.toLowerCase());

    assertEquals(DataType.INTEGER, Y3fields.get(1).type);

    int numTuplesRead = 0;

    Iterator<Tuple> Y2Iter = server.openIterator("Y2");

    while (Y2Iter.hasNext()) {

      Tuple t = Y2Iter.next();

      assertEquals(t.size(), 1);

      assertTrue(t.get(0).getClass() == Integer.class);

      assertEquals(t.get(0), basicInputData.get(numTuplesRead).first);

      numTuplesRead++;

    }

    numTuplesRead = 0;

    Iterator<Tuple> Y3Iter = server.openIterator("Y3");

    while (Y3Iter.hasNext()) {

      Tuple t = Y3Iter.next();

      assertEquals(t.size(), 2);

      assertTrue(t.get(0).getClass() == String.class);

      assertEquals(t.get(0), basicInputData.get(numTuplesRead).second);

      assertTrue(t.get(1).getClass() == Integer.class);

      assertEquals(t.get(1), basicInputData.get(numTuplesRead).first);

      numTuplesRead++;

    }

    assertEquals(basicInputData.size(), numTuplesRead);

  }

  public void testGetInputBytes() throws Exception {

    File file = new File(TEST_WAREHOUSE_DIR + "/" + SPECIFIC_SIZE_TABLE + "/part-m-00000");

    file.deleteOnExit();

    RandomAccessFile randomAccessFile = new RandomAccessFile(file, "rw");

    randomAccessFile.setLength(2L * 1024 * 1024 * 1024);

    Job job = new Job();

    HCatLoader hCatLoader = new HCatLoader();

    hCatLoader.setUDFContextSignature(this.getName());

    hCatLoader.setLocation(SPECIFIC_SIZE_TABLE, job);

    ResourceStatistics statistics = hCatLoader.getStatistics(file.getAbsolutePath(), job);

    assertEquals(2048, (long) statistics.getmBytes());

  }

  public void testConvertBooleanToInt() throws Exception {

    String tbl = "test_convert_boolean_to_int";

    String inputFileName = TEST_DATA_DIR + "/testConvertBooleanToInt/data.txt";

    File inputDataDir = new File(inputFileName).getParentFile();

    inputDataDir.mkdir();

    String[] lines = new String[]{"llama\t1", "alpaca\t0"};

    HcatTestUtils.createTestDataFile(inputFileName, lines);

    assertEquals(0, driver.run("drop table if exists " + tbl).getResponseCode());

    assertEquals(0, driver.run("create external table " + tbl +

      " (a string, b boolean) row format delimited fields terminated by '\t'" +

      " stored as textfile location 'file://" +

      inputDataDir.getAbsolutePath() + "'").getResponseCode());

    Properties properties = new Properties();

    properties.setProperty(HCatConstants.HCAT_DATA_CONVERT_BOOLEAN_TO_INTEGER, "true");

    PigServer server = new PigServer(ExecType.LOCAL, properties);

    server.registerQuery(

      "data = load 'test_convert_boolean_to_int' using org.apache.hcatalog.pig.HCatLoader();");

    Schema schema = server.dumpSchema("data");

    assertEquals(2, schema.getFields().size());

    assertEquals("a", schema.getField(0).alias);

    assertEquals(DataType.CHARARRAY, schema.getField(0).type);

    assertEquals("b", schema.getField(1).alias);

    assertEquals(DataType.INTEGER, schema.getField(1).type);

    Iterator<Tuple> iterator = server.openIterator("data");

    Tuple t = iterator.next();

    assertEquals("llama", t.get(0));

    // TODO: Figure out how to load a text file into Hive with boolean columns. This next assert

    // passes because data was loaded as integers, not because it was converted.

    assertEquals(1, t.get(1));

    t = iterator.next();

    assertEquals("alpaca", t.get(0));

    assertEquals(0, t.get(1));

    assertFalse(iterator.hasNext());

  }

}